What was found
VERY LOUD SCRAPING NOISE HEARD FROM RT WING ROOT AREA WHEN LDG-GEAR WAS EXTENDING. CYCLED LANDING GEAR WITH ANTI-SKID ENGAGED, CYCLED FLAPS, CYCLED AILERONS/SPOILERS, RAN PTU DURING GEAR CYCLING. UNABLE TO DETECT ANY ABNORMAL NOISES AS DESCRIBED. ALL SYSTEMS OPERATED NORMALLY. VISUALLY INSPECTED INBD FLAPS AND FLAP TRACKS, FOUND LT INBD TRACK ROLLER CONTACTING INNER FACE OF TRACK DURING OPS. REPLACED TRACK. CHECKS GOOD. RETURNED TO SERVICE.